Exam 10: The Blood Vessels and Blood Pressure

The efferent pathway for the baroreceptor reflex involves the ____________________ nervous system, and the effector organs are the ____________________ and ____________________.

Normally most of the blood at any one time is in the capillary beds, because this is where material exchange is taking place.

Assume a person has a blood pressure recording of 125/77. (a) What is the systalic pres5ure?_____________ (b) What is the diestolic pressure?_______________________ (c) What is the pulse pressure?_____________ (d) What is the mean arterial pres5ure?_______________ (e) Waud ary 5aund be heard when the pressure in an external cuff araund the arm was 130 mun HE?_____________ (f) Wauld any 50und be heard when cuff pressure was $118 \mathrm {~mm} \mathrm { He }$ ?______________ (g) Wauld any saund be heard when cuff pressure was $75 \mathrm {~mm} \mathrm { Hg }$ ?________________

Indicate which type of vessel performs the function listed by writing the appropriate letter in the blank using the answer code below. a.arteries b.arterioles c.capillaries d.veins e.lymphatics -Serve as low-resistance passageways from the heart to the tissues

Indicate whether arteriolar vasoconstriction or vasodilation would occur in the tissue in question by using the following answer code: a.produces vasoconstriction b.produces vasodilation c.no change in arteriolar caliber -Sympathetic stimulation of kidney arterioles

The main process by which exchange of solutes occurs between the blood and interstitial fluid at the capillary level is passive diffusion down concentration gradients.

Indicate what effect the change in question would have on bulk flow using the answer code below: a.increases ultrafiltration and decreases reabsorption b.decreases ultrafiltration and increases reabsorption c.increases both ultrafiltration and reabsorption d.decreases both ultrafiltration and reabsorption e.would not alter ultrafiltration and reabsorption -Loss of plasma protein in the urine due to kidney disease

What force continues to drive blood through the vasculature during ventricular diastole?

Shock may develop from

Venous capacity depends on the ____________________ of the vein walls.

The major determinant influencing resistance to blood flow is the

Because of their elasticity, arteries act as a(n) ____ for maintaining blood flow during diastole.

Which of the following does not occur as a compensation for hemorrhage?

Vasoconstriction of blood vessels changes the flow of blood through them by ____________________ (increasing/decreasing) it.

Organs that do not recondition the blood are more vulnerable to reductions in blood flow than organs that perform homeostatic functions on the blood.

Blood flow is affected by

Match the term with the correct characteristic. a.reactive hyperemia b.active hyperemia c.pressure autoregulation d.extrinsic control -Local arteriolar mechanisms that are aimed at keeping tissue blood flow fairly constant in spite of rather wide deviations in mean arterial driving pressure

Which statement about nitric oxide is incorrect?

The arteries

Indicate whether arteriolar vasoconstriction or vasodilation would occur in the tissue in question by using the following answer code: a.produces vasoconstriction b.produces vasodilation c.no change in arteriolar caliber -A hyperemic response in the heart